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01-09-2013 03:42 AM  7 years ago
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alizee

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test _V911
As with most tech product being marketed direct from China, the text of almost all printed material is mostly Chinglish; that amazing and sometimes amusing language created when people who speak English as a second or third language translate from Chinese advertising. A warning panel on the side of the box provides this classic example:
The box protects its contents well; it is clearly intended for use as a field case with a handle oriented so everything is upright when carried and snap-in molded pockets for everything. Each item is also taped securely to ensure it gets all the way from China to the customer intact; they even put little foam doughnuts on the sticks to protect them from crushing damage:The first thing I did was to plug the included batteries & charger into a good source of power so they can charge while I give the new beast its preflight checkover; this old USB hub provides a stable 2.5A power source:
Aside from Helicopter, Transmitter, Batteries and Charger, also included are the usual spare set of Main blades & Tail rotor. Tucked away under the black plastic tray was an actual printed paper black & white Instruction Manual (okay, probably photocopied) in both Chinglish and Chinese. It does have a parts list and exploded view; the picture is clearly from the older model, but I can't say about the parts list as nobody seems to use the WL Toys Part numbers. I have attached a PDF version of the whole thing below for your reference; I figure somebody's going to post it, might as well be in my review.
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01-09-2013 03:45 AM  7 years ago
alizee

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Introduction

This is the third major revision of the now-famous "Little Heli that Could" from WL Toys:Like previous versions it is small, nimble and most of all, inexpensive. Parts are also inexpensive and readily available from several internet vendors. It is a good intermediate step for those who've mastered coaxials, but still don't feel ready for the large cash outlay of an mCPX or similar Collective Pitch heli. It is fixed-pitch, which means that while it isn't capable of doing inverted or most other 3D flight, it will still function mostly the same as a "real helicopter" in hover flight. One learns some bad habits flying coaxial helicopters, and the controls don't work the same. This will give you a chance to get used to flying in what is known to real helicopter pilots as "Mode 2", with Rudder/Elevation on the left, and Cyclic control on the right.

While some will be more comfortable starting out with a coaxial helicopter, many with experience flying rotary craft in video games or simulators should be able to start out with this helicopter. It has a very good (unbelievably good, given the price point) gyro stabilization system which for the most part makes it nearly as user-friendly as a coaxial helicopter; unlike most of those toys, it can also be repaired in case of crash damage and is designed with easy-swap batteries to allow long sessions of repeated flights.

This model looks the same as previous models; it is also available in White with Blue and White with Red paint schemes. It measures 250mm from front tip of main blade to rear tip of tail blade; 85mm tall to the very top of the blade head. All Up Weight is 32g; the radio body measures 145mm wide by 180mm tall, or approx 75% proportions of a real Hobby-Grade Radio TX.

My unit arrived with a bent main gear; after removing it and dropping it in boiling water for 5 minutes, it returned to its original shape very closely. It still wasn't perfect, but quite close enough to be used without worry. After that, the heli flew as well right out of the box as my long-standing favorite V911 #2; once the main gear breaks in, I'm sure it will be as quiet as my "Little Sparrow" too.

3) Flying

These little birds are horrible flying close to the ground; you definitely need to hit the throttle and get it up quickly as ground effect will fight you. Once you get in the air, typically a small amount of rudder trim may be needed which will need to be retouched as the battery nears the end of its power. I recommend trimming Cyclic by adjusting the servo links; it takes a few minutes, but after that you usually never need to trim again unless you break something badly. I'm not a great pilot; but with this heli I'm able to do controlled elevation/descent, piro, figure H & figure 8, & near 90° flight in both "halfpipe" and "orbital" travel; it's precise enough that I've parked it on the rafters, on bleachers, on my fieldbox and in basketball nets and trees as well as blade-waving and crashing. Lots of crashing.

4) Durability

These little guys are made of some tough plastic; I've bounced this heli off walls, rafters, ceilings, light fixtures, bleachers and basketball backboards. With very few exceptions it lands on the ground ready to fly again. Usually what breaks, when it does break, are skids and occasionally mainblades. I've never (knocks on wood) broken a tail, main chassis or canopy; though the canopy is made of tough RubberMaid-type plastic, paint does NOT like to stick and every one I've owned has chipped and flaked easily. Such is the price of having an inexpensive, tough canopy.

The one massive pain in the tuchus with this heli has always been that the battery likes to fly out of the holder in severe crashes; such that I've learned to use a small bit of packing tape across the bottom to hold it in the skids. This latest update addresses that issue very successfully; the battery holds in VERY securely, and now is close against the chassis, out of the usual impact zones. I found it necessary to make a packing tape pull handle to remove the battery; I didn't like squeezing the soft body of the LiPo as tightly as was required to pull it out.

5) Summary

I know it's normal to end with the summary; but I'm an Engineer, and as such my review is... long. And verbose. And full of technical... things. Most average readers will probably get bored by the end of the 5th bullet point; so I'm going to put the important stuff here first and let the people who want all the nitty-gritty details read on afterwards.
All told, if you have even the tiniest bit of interest in flying an RC heli or are looking for a gift for someone with such interest, this is a great toy. Maybe not a great thing for someone already flying a Hobby-Grade CCPM helicopter, though.
But for the rest of us, it sure makes a helluva lot of fun for a very small amount of money!

Product page:
http://www.tmart.com/New-Wltoys-V91...ge_p160636.html
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01-09-2013 05:32 AM  7 years ago
alizee

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New Battery & Skid

The new battery connector is held in place with a collar and screws; this means we are finally able to replace a broken skid without soldering or doing the old "twist & tape" on the battery wires:The wires themselves are a little heavier guage as well as having thicker, more durable insulation. Here you can see the plastic cap and the captive JST-PH plug it uses for power:
[url=http://i1183.photobucket.com/albums/x462/mnemennth/V911%20New%20Model%20RTF%20Review/BatteryConnector3.jpg]Sorry folks, you're not going to be able to use the very common E-Flite Parkzone/MCX sized batteries directly; here we have a comparison between common battery connectors:Top is a Xieda 9958 battery; it uses the same JST-SH plug as the Nano CP and Parkzone, etc. batteries. Notice the square shell profile. Middle is the new style V911 with JST-PH connector; notice the rounded shell profile. Bottom for comparison is the larger JST-XH plug commonly used as a balance plug on 3S batteries. If you want to replace the plug with a JST-SH plug and grind down the plastic shell of the battery to fit the more rounded profile of the V911 battery shape, it IS possible; but it won't be easy.
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